Titanium Geolocation Not Working in Android Emulat

问题:

I get this error:

[ERROR][GeolocationModule( 278)] (KrollRuntimeThread) [633,2564] Unable to get current position, location is null

and I have followed other people's advice without any luck.

Could someone lead me in the right direction? I would be so grateful. Thank you!

var win1 = Titanium.UI.createWindow({
    title : 'map_landing',
    backgroundColor : '#fff'
});

var win2 = Titanium.UI.createWindow({
    title : 'hails_window',
    backgroundColor : '#fff'
});

var win3 = Titanium.UI.createWindow({
    title : 'cabs_window',
    backgroundColor : '#fff'
});

User = {
    location : {}
};

var hail_button = Titanium.UI.createButton({
    title : 'Hail Cab',
    top : 10,
    width : 200,
    height : 50
});

var find_button = Titanium.UI.createButton({
    title : 'Find People',
    bottom : 10,
    width : 200,
    height : 50
});

var options = {
    accessKeyId : '',
    secretAccessKey : ''
}

Ti.Geolocation.purpose = "Receive user location";

Titanium.Geolocation.getCurrentPosition(function(e) {
    if (e.error) {
        alert('HFL cannot get your current location');
        return;
    }

    User.location.longitude = e.coords.longitude;
    User.location.latitude = e.coords.latitude;
    User.location.accuracy = e.coords.accuracy;
    User.location.speed = e.coords.speed;
    User.location.timestamp = e.coords.timestamp;

    var mapview = Titanium.Map.createView({
        mapType : Titanium.Map.STANDARD_TYPE,
        region : {
            latitude : User.location.latitude,
            longitude : User.location.longitude,
            latitudeDelta : 0.01,
            longitudeDelta : 0.01
        },
        animate : true,
        regionFit : true,
        userLocation : true
    });

    win1.add(mapview);
    win1.add(hail_button);
    win1.add(find_button);
    hail_button.addEventListener('click', function(e) {
        alert('hello');
        $.ajax('http://hail.pagodabox.com/add_hail', {
            type : 'POST',
            lat : User.location.latitude,
            lang : User.location.longitude,
            success : function(response) {
                alert(response)
            }
        })
    });

    find_button.addEventListener('click', function(e) {

    });
    win1.open();
});

回答1:

It took me some time to track this down, but I think I've found the steps needed to "fix" the lack of a location in the Android emulator (from this answer):

First, open ddms (Dalvik Debug Monitor). On Windows, navigate to the android-sdk\tools directory and run ddms.bat. The first line in the top-left pane will read something like "emulator-####" such as emulator-5560.

Open a command prompt window. Enter 'telnet localhost ####' substituting the number you found above. This will open a telnet window to your android emulator.

Enter the following command (substitute your own longitude & latitude, in that order, if you'd like):

geo fix -82.411629 28.054553

(I'm pretty sure you can add elevation as a third number.) The GPS icon will appear in the emulator's notification bar. Geolocation is now available. At this point, I could get location data in my app and in other apps, such as Maps.